:root {
  font-family: -apple-system, Helvetica, sans-serif, 'MicrosoftYaHei';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #fff;
  font-weight: 400;
  background: #f5f5f5;
  /* 忽略斜体等 */
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
body {
  width: 100vw;
  min-width: 320px;
  min-height: 100vh;
  line-height: 1.5;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* a点击去除背景 */
/* img, a {
  -webkit-touch-callout: none;
} */
/* code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
} */
.loading-box {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}

a {
  -webkit-tap-highlight-color: transparent;
}
input {
  appearance: none;
}
.fn12 {
  font-size: 12px;
}
.fn13 {
  font-size: 13px;
}
.fn14 {
  font-size: 14px;
}
.fn17 {
  font-size: 17px;
}

.fn18 {
  font-size: 18px;
}
.fn20 {
  font-size: 20px;
}
.fn24 {
  font-size: 24px;
}

.bold {
  font-weight: 700;
}
.mgt10 {
  margin-top: 10px;
}
.mgb10 {
  margin-bottom: 10px;
}
.mgr10 {
  margin-right: 10px;
}
.mgl10 {
  margin-left: 10px;
}
.mgr20 {
  margin-right: 20px;
}
.flex {
  display: flex;
}
.flex-column {
  display: flex;
  flex-direction: column;
}
.flex-center {
  display: flex;
  align-items: center;
}
.flex-between {
  display: flex;
  justify-content: space-between;
}
.flex-middle-center {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
